This is one of the things someone will say to you on Roblox if you
piss them off. Usually, they want you to give them your
Discord name and tag so you can join their "voice call". Usually, the end result of a mic up is both of the
people in the call will make themselves look like bozos.
Person #1: Slender/Ro-
gangster/Copy and Paste: Mic up
During the call:
Person #1: Shut yo bitch ass up clown
Person #2: No, you shut the fuck up
kid
(This usually goes on for a long
time, and the two callers just shout the words "Bitch", "Mf", or some other cuss words. They usually both make themselves look like bozos)